Question 3262 Deck General

70% to pass

The heavy three-, four-, or six-sided length of pipe suspended from the swivel through the rotary table and connected to the topmost joint of drill pipe to turn the drill stem as the rotary table turns is called the _______________.

A swivel
B bail
C cock
D kelly
AI Explanation

The correct answer is D) kelly. The kelly is the heavy, multi-sided length of pipe that is suspended from the swivel through the rotary table and connected to the topmost joint of the drill pipe. It is responsible for turning the drill stem as the rotary table turns, allowing the drill bit to bore into the earth. The other answer choices are incorrect because they do not accurately describe the specific component that turns the drill stem. The swivel (A) suspends the kelly, the bail (B) is used to lift the drill pipe, and the cock (C) is a valve used to control the flow of fluids.

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